Corrigendum to "Extraction of notable points from ECG data: A description of a dataset related to 30-s seated and 30-s stand up" [Data in Brief, volume 46 (2023) 108874].

[This corrects the article DOI: 10.1016/j.dib.2022.108874.].

Algorithms for automated diagnosis of cardiovascular diseases based on ECG data: A comprehensive systematic review.

The prevalence of cardiovascular diseases is increasing around the world. However, the technology is evolving and can be monitored with low-cost sensors anywhere at any time. This subject is being researched, and different methods can automatically identify these diseases, helping patients and healthcare professionals with the treatments. This paper presents a systematic review of disease identification, classification, and recognition with ECG sensors. The review was focused on studies published between 2017 and 2022 in different scientific databases, including PubMed Central, Springer, Elsevier, Multidisciplinary Digital Publishing Institute (MDPI), IEEE Xplore, and Frontiers. It results in the quantitative and qualitative analysis of 103 scientific papers. The study demonstrated that different datasets are available online with data related to various diseases. Several ML/DP-based models were identified in the research, where Convolutional Neural Network and Support Vector Machine were the most applied algorithms. This review can allow us to identify the techniques that can be used in a system that promotes the patient's autonomy.

Extraction of notable points from ECG data: A description of a dataset related to 30-s seated and 30-s stand up.

It is increasingly possible to acquire Electrocardiographic data with featured low-cost devices. The proposed dataset will help map different signals for various diseases related to Electrocardiography data. The dataset presented in this paper is related to the acquisition of electrocardiography data during the standing up and seated positions. The data was collected from 219 individuals (112 men, 106 women, and one other) in different environments, but they are in the Covilhã municipality. The dataset includes the 219 recordings and corresponds to the sensors' recordings of a 30 s sitting and a 30 s standing test, which checks to approximately 1 min for each one. This dataset includes 3.7 h (approximately) of recordings for further analysis with data processing techniques and machine learning methods. It will be helpful for the complementary creation of a robust method for identifying the characteristics of individuals related to Electrocardiography signals.

Emerging opportunities in exploring the nutritional/functional value of amaranth.

Amaranthus spp. is a highly nutritive pseudocereal, rich in macronutrients and micronutrients, including vitamins and minerals. Amaranth grain is rich in essential amino acids, particularly lysine, with high nutritional quality. In addition, recent research studies demonstrate that Amaranthus spp. essential nutrients, such as phytochemicals, have potential beneficial health effects. This review focuses on the amaranth grain's nutritional composition and antioxidant capacity. Also, limitations on its intake and strategies to improve its digestibility, bioaccessibility and bioavailability are summarized in this review. Finally, the most recent literature studies reporting food applications of amaranth (e.g., as encapsulating material) are discussed in order to deepen the understanding of potential health benefits and functionalities of this nutritious grain.

Reliability of Submaximal Yo-Yo Tests in 9- to 16-Year-Old Untrained Schoolchildren.

PURPOSE: To examine the reliability of age-adapted submaximal Yo-Yo (Yo-Yosubmax) intermittent tests in untrained schoolchildren aged 9-16 years (n = 139; 72 boys and 67 girls) and within children with high and low percentage of body fat (%BF). METHODS: Yo-Yo intermittent recovery level 1 children's (YYIR1C), Yo-Yo intermittent endurance level 1 (YYIE1), and Yo-Yo intermittent endurance level 2 (YYIE2) tests were performed 7 days apart by 9- to 11-, 12- to 13-, and 14- to 16-year-old children, respectively. Reliability was tested for Yo-Yosubmax heart rate (HRsubmax), peak HR, and maximal distance. RESULTS: HRsubmax typical errors of measurement (TEM) in YYIR1C, YYIE1, and YYIE2 were 2.2% (1.7%-2.9%), 2.4% (1.9%-3.3%), 1.9% (1.6%-2.5%) and 2.4% (1.9%-3.3%), 2.4% (1.9%-3.2%), 1.9% (1.5%-2.4%) for girls and boys, respectively. HRsubmax intraclass correlation coefficient values were good to excellent (.62-.87) in all age groups and in schoolchildren of different %BF. TEM for HRsubmax ranged from 2.1% to 2.3% in high and low %BF groups. Maximal distance intraclass correlation coefficients were excellent and TEM values ranged from 11% to 12% in both %BF groups. HRsubmax was moderately to largely associated (r = -.46 to -.64; P < .002) with Yo-Yo maximal distance across the age groups. CONCLUSION: Yo-Yosubmax tests are a reliable tool providing useful and sustainable aerobic performance testing in physical education, irrespective of individual %BF.

The trust-commitment challenge in service quality-loyalty relationships.

PURPOSE: The purpose of this paper is to develop and empirically test a model to examine service quality, satisfaction, trust and commitment as loyalty antecedents in a private healthcare service. DESIGN/METHODOLOGY/APPROACH: The approach was tested using structural equation modelling, involving 175 patients from a private Portuguese healthcare unit, using a revised Service Quality Assessment Scale (SQAS) scale for service quality evaluation. FINDINGS: The scale used to evaluate service quality is valid and meaningful. Service quality proved to be a multidimensional construct and relevant to build satisfaction. The path satisfaction→trust→loyalty was validated, whereas the path satisfaction→commitment→loyalty was not statistically supported. RESEARCH LIMITATIONS/IMPLICATIONS: The revised SQAS scale showed good internal consistency in healthcare context. Further trust-commitment antecedents must be examined in a private healthcare landscape to generalise the findings. PRACTICAL IMPLICATIONS: Healthcare quality managers must explore the service quality dimensions to generate satisfaction among their patients. Developing trust generates positive patient attitudes and loyalty. ORIGINALITY/VALUE: This study explores using the SQAS scale in a private healthcare context. The authors provide further evidence that service quality is an antecedent and different from satisfaction. All the measures used proved to be valid and reliable. Trust and commitment play different roles in their relationship with loyalty.

Caracterização do processo de análise do jogo em clubes da 1ª liga portuguesa profissional de futebol na época 2005/2006 / Characterization of match analysis process in Portuguese first football league teams: season 2005/2006

O nível competitivo alcançado pelo futebol profissional tem exigido níveis de desempenho cada vez mais elevados. Uma das formas que tem sido utilizada para monitorá-la é a análise do jogo (AJ). O presente trabalho pretendeu caracterizar o processo de AJ na 1ª liga portuguesa profissional de futebol. Os objetivos do estudo foram conhecer: 1) a importância da AJ; 2) a frequência da sua realização; 3) os profissionais envolvidos; 4) os instrumentos e métodos utilizados; e 5) a importância atribuída pelos treinadores a diferentes eixos de análise. A amostra foi constituída por 16 treinadores da 1ª liga portuguesa de futebol profissional 2005/2006 (89 por cento do universo em estudo). A cada um deles foi aplicado um questionário previamente validado por oito especialistas. Os resultados obtidos revelaram que a AJ adquire a sua pertinência ao nível da planificação tático-estratégica. É comumente utilizado um instrumento com categorias predefinidas e os eixos de análise eleitos estão relacionados com a dimensão tático-estratégica do jogo. O treinador principal é o protagonista na análise do jogo da sua equipe, delegando a função de análise dos adversários num profissional da equipe técnica. Os sistemas de análise utilizados não são sofisticados e apenas uma minoria admite recorrer à informática. Os eixos de análise menos valorizados estão relacionados com a análise energético-funcional dos jogadores. Sintetizando, na referida liga o processo de AJ é sistematizado e foca preferencialmente a vertente táctico-estratégica dos jogos analisados. No entanto, apesar de serem utilizados instrumentos com categorias predefinidas, os sistemas de análise utilizados são pouco sofisticado.

Nowadays, the competitive level achieved by professional football has required performance levels to increase highly. Match analysis is one of the tools that has been used to control performance. The aim of this work was to characterise match analysis process of 1st portuguese football league teams. The goals of this study were those of knowing: 1) the importance of match analysis; 2) the frequency of its accomplishment; 3) the professionals involved; 4) the instruments and systems used; and 5) the importance given to different axes of analysis. The sample was set up of sixteen coaches from the 1st Portuguese professional football 2005/06 league (89 percent of the universe taken for study). To each coach it was applied a questionnaire previously ratified by eight specialists. The obtained results revealed that match analysis seems to acquire its pertinence in planning strategic and tactic dimensions. Agreeing with this idea, the elected dimensions of analysis are related with strategy and tactics. The less appreciated dimensions of analysis are related with time-motion analysis. It seems to be usual to use an instrument with predefined categories. The coach is the match analysis protagonist of his own team and confers the duty of scouting opponent teams to a member of the technical staff. The analysis systems used aren't sophisticated and only a minority admits to use computerised technologies. In summary, in the mentioned league the process of match analysis is sistematized and focuses mainly on tactical and strategic aspects of the game. However, despite being used instruments with predefined categories, the analysis systems used are unsophisticated.

O processo de planejamento e periodização do treino em futebol nos clubes da principal liga portuguesa profissional de futebol na época 2004/2005 / The training planning and periodization processes in professional football Portuguese league 2004/2005

O planejamento e a periodização são fases cruciais diretamente implicadas na eficácia, consistência e qualidade do jogo das equipes. Foram objetivos deste estudo investigar: 1) a implementação da dinâmica da "carga" e sua relação com os períodos; 2) a importância atribuída às componentes da "carga" e recuperação; 3) a prescrição da intensidade; 4) as componentes do rendimento consideradas no planejamento, sua importância hierárquica e, forma de trabalho; 5) o aspecto considerado central no planejamento; 6) o tipo de planejamento utilizado na preparação da equipe; e 7) a utilização da modelação no processo de treino. O universo estudado foi constituído pelas 18 equipes do principal escalão de Futebol, na época 2004/2005. Foi aplicado um inquérito por questionário validado por sete especialistas. Representando cada um dos clubes em estudo, responderam ao questionário 16 treinadores principais e dois adjuntos, por remessa do respetivo treinador principal. Os resultados sugerem que embora pareça não ser a corrente de treino dominante, o paradigma da dimensão física do treino aparece ainda bastante vincado. Alguns dos pressupostos associados à conceção tradicional do treino permanecem presentes. Parece ser costume operacionalizar um planejamento com base na dimensão tática. Apesar desta ser a "guia" do processo, e "arrastar" a dimensão física, nem sempre tal acontece. Embora surjam situações em que ainda se promove a separação das dimensões do rendimento, a referência passa por trabalhá-las, sempre que possível, simultaneamente. A modelação do jogo é uma tendência na maioria dos clubes. Nem todos os treinadores agem de acordo com as suas convicções expressas.

Planning and periodization are assumed to be crucial phases directly implied in the efficiency, consistency and game quality of the teams. The aim of this work is to investigate: 1) the implementation of the "load`s" dynamics and its relation to periods; 2) "load`s" components and recovery importance; 3) intensity prescription; 4) the performance components considered in planning, its importance, hierarchy, and how they are developed; 5) the main aspect in planning; 6) the type of planning used in the team preparation; 7) the importance of game model in the training process. The universe under study is constituted by the eighteen "Superliga" teams in the 2004/2005 season. It was applied an inquiry by questionnaire validated by seven specialists. In representation of each one of the studying teams, this questionnaire was answered by sixteen main coaches and two assistant-coaches, by indication of the main coach. Although the results suggest that the paradigm of the physical dimension seems not to be the dominant training current, it still appears rather emphasized in "Superliga". Some of the assumptions associated to the traditional training conception remain present in the work carried through, and are being frequently used. It seems to be usual to operate a planning based on the tactical dimension. In fact, this dimension is considered to be the "guide" of the process, and "drags" the physical dimension. Nevertheless, this doesn't always happen. There are situations where the separation of the training factors is established; however the reference passes for working them, as always as possible, simultaneously. There is consensus in matter of the valuation given to the game model. Not all the coaches act according to their expressed beliefs.